Hanger for electric lamps



No. 6l4,484. Patented Nov. 22, I898.

. J. E. MAYO.

HANGER FOR ELECTRIC LAMPS.

(Application filed June 16, 1898.)

(No Model.) 2 Sheath-Sheet I.

J l m A W i g 1%; 1 n 7 P? [E g C) X1 W (v Jr 211211232 Patented Nov.22, I898.

J. E. MAYO.

HANGER FOR ELECTRICLAMPS.

2 Sheets-Sheet 2.

(Application filed June 16. 1898.)

r lull Illl lll' (No Model.)

UNITED STATES PATENT OEEIcE.

JUNIUS E. MAYO, OF BELVIDERE, ILLINOIS.

HANGER FOR ELECTRIC LAMPS.

SPECIFICATION forming part of Letters Patent No. 614,484, dated November22, 1898.

Application filed June 16, 1898.

To all whomjt may concern.-

Beit known that I, J UNIUS E. MAYO, a citizen of the United States,residing at Belvidere, in the county of Boone and State of Illinois,have invented certain new and useful Improvements in Hangers forElectric Lamps, of which the following is a specification.

The object of my invention is to provide means for lowering electriclamps from their sockets, disconnected from their electric circuits, forthe purpose of putting in fresh carbons or repairing the lamps andwithout extinguishing the remaining lights in a circuit; and it consistsof certain new and useful features of construction and combinations ofparts hereinafter fully described, and specifically pointed-out in theclaims.

Referring to the accompanying drawings, which form a part of thisspecification, Figure 1 is aside elevation of a hanger for electric Ilamps embodying my invention in vertical central partial section. Fig. 2is a central vertical section of the same. Figs. 3 to 5, inclusive, arecentral vertical sections of the vertical socket of the hanger, showinga stem inserted thereinto and a locking device for securely locking thestem and socket together. Fig. 6 is a section on the dotted line 6 6 inFig. 1 of parts there shown. Fig. '7 is a section on the dotted line 7 7in Fig. 1.

Like letters of reference indicate correspondin g parts throughout theseveral views.

A is a circular metallic cap provided on the outside with anupwardly-projecting tubular suspending-lug A, on the inside withdownwardly-projecting bosses A having interiorly-threaded screw-holes Atherein, and also having its rim A expanded to form entranceways Athereinto for line-wires.

B is a circular plate, of slate or other suit-. able non-conductingmaterial, having an opening B extending through its center and securedto the bosses A by means of screws B passing thcrethrough into holes Atherein.

0 is a circular jacket for protecting the parts covered thereby and issecured to the rim A of the cap A in any suitable manner.

D is a circular vertical metallic socket opening downward, enlarged intransverse diameter at its lower portion to form a circular verticalchamber D therein havin annular Serial No. 683,655. (No model.)

shoulders D D D at the ends thereof, and is secured to the plate B bymeans of screws D passing thcrethrough into holes D therein.

E is a ring of hard rubber or other suitable non-conducting material andis fast to the socket D.

F is a ring of copper or other suitable conducting material and is fastto the ring E.

G is a switch-spring,preferably of phosphorbronze, provided with areceptacle G, containing a carbon point G and is secured to the outsideof the socket D by means of screws G G G is a stud rigidly secured tothe inside of the free end of the spring G and projects through theopening D into the interior of the socket D.

H is a block of any suitable non-conductin g material, secured to thesocket D by means of screws H.

H is a plate of copper or other suitable conducting material, secured tothe block H by means of screws H H is a receptacle fast to the plate H,containing a carbon point H which is normally in contact with the carbonpoint G through the action of the switch-spring G.

I is a metallic conductor connecting the ring F with the plate H throughthe bindingpost 1.

J J are line-wires, the former connecting with the binding-post G andthe latter with the binding-post I.

K is a stem adapted to enter the socket D and having a longitudinal slotK extending thcrethrough and registering with the chamber D therein. Theupper end of the stem K is bored and threaded interiorly at K to admitthe counterpart-nut K which has a central Vertical opening K therein,gradually increasing in transverse diameter toward the bottom thereof.

L is a trifurcated locking device having members L L L one whereof, as Lis weighted, in this instance by beingincreased in size, mounted bymeans of a pivot L in the longitudinal slot K in the stem K.

M is a ring of non-conductin g material, fast to the stem K.

M is a ring of brass or other suitable conducting material, secured tothe ring M.

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M are bronze springs secured by their lower ends to the ring M, theirupper ends being free.

N is a binding-post connecting the line-wire J with the ring M.

N is a binding-post connecting the linewire J with the stem K.

O O are two plates connected by means of hinges O to form a sheave-case.

O? is a sheave mounted in the sheave-case.

O are trunnions projecting from the suspDegding-Iug A into bearings M inthe plates P is a lamp-hoisting rope fast to the stem K through the nutK and screw K in the end thereof and passing through the parts D 13 Aover the sheave O The construction of the sheave-case O O, with itsbearings 0 and the tubular suspending-lugA, with its trunnions O adaptsthem to readily receive the hoisting-rope P, provides convenient meansfor connecting and disconnecting them, and prevents water from enteringthe cap A through the rope-aperture in the suspending-lug A.

Fig. 1 shows the parts of the hanger operat-ively connected together andcarrying a lamp Q. The electric current, coming from a dynamo,passesthrough the wire Jfltraverscs the binding-post I, plate H conductor I,ring F, springs M ring M, wire J lamp Q, wire J stem K, socket D,binding-post G, and wire J", whence it returns to the dynamo.

Fig. 2 shows the lamp Q disconnected from its hanger. The withdrawal ofthe stem K from its socket D released the stud G which left theswitch-spring Gfree to act and which, acting, pressed the carbon pointsG and I1 into contact, whereupon the electric current,

passing from the wire J traverses the binding-post 1, plate H carbonpoints G H, spring G, binding-post G and wire J,whence it returns to thedynamo.

Fig. 2 shows the lamp Q disconnected from its circuit to receive newcarbons or for any other purpose. If the free end of the hoisting-rope Pbe now pulled, the stem K will pass upward into the socket D and themember L of the locking device L will engage with the lower end of thesocket D, thereby tilting the locking device L to the position shown inFig. 3, when the member L thereof will engage with the shoulder D in thesocket D. If the hoisting rope P be now slackened slightly, the stem Kwill descend a little and the member L of the locking device L willengage the shoulder D which will prevent such locking device fromturning to the position shown in Fig. 5 by reason of the weight of themember L thereof and guide the same downward until its said member Lstrikes the shoulder D in the socket D, thereby operatively locking thelatter and the stem K together.

To disconnect the lamp Q from its circuit, pull the hoisting-rope Puntil the member L of the locking device L, sliding upward along thevertical portion of the shoulder D until it is free to swing over thetop thereof, when the locking device L will swing to the position shownin Fig. 5. Upon releasing the hoisting-rope P the weight of the stem Kand lamp Q will cause them to descend to the position shown in Fig. 2,wherein the lamp Q is shown disconnected from its circuit.

I claim-- v 1. In a hanger for electric lamps, in combination, acircular vertical socket, opening downward and enlarged in transversediameter, at its lower portion, to form a circular vertical chambertherein having annular shoulders at the ends thereof, a stem adapted toenter the socket and having a longitudinal slot extending therethronghand registering with the chamber in the socket, and a trifurcatedlocking device rotatably mounted, on a horizontal bearing in the slot inthe stem, and adapted to engage with the annular shoulders in thechamber, thereby locking the stem and socket together, substantially asand for the purpose specified.

2. In a hanger for electric lamps, in combination, a circular verticalsocket opening downward, a spring on the socket normally closing acircuit, a stud fast to the spring and projecting inward, through atransverse opening, in the socket, into the vertical opening therein,and a stem adapted to enter the socket and, by outward pressure upon thestud, open the circuit, substantially as and for the purpose specified.

3. In a hanger for electric lamps, in combination, two plates, hingedtogether to form a sheave-case, each having a trunnion-bearing therein,a sheave mounted in the sheave-case, a circular cap provided with anupwardly-projecting tubular suspending-lug having trunnions thereonadapted to enter the trunnionhearings in the sheave-case, substantiallyas and for the purpose specified.

JUNIUS E. MAYO. lVitn esses:

L. L. MoRRrsoN, L. L. MILLER.

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